Synthesis of the first methanofullerene derivatives of Sc 3 N @ D 5 hC 80 †
Synthesis of the first methanofullerene derivatives of Sc 3 N @ D 5 hC 80 †
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合成第一个亚甲基富勒烯衍生物 Sc 3 N @ D 5 hC 80 †
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发表时间：
2015
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通讯作者：
L. Echegoyen
中科院分区：
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作者：
M. Ceron;Marta Izquierdo;N. Alegret;Juan A. Valdez;A. Rodríguez‐Fortea;M. Olmstead;A. Balch;J. Poblet;L. Echegoyen
1999年，Stevenson et al.报道了可以在弧形反应堆中制备的第三丰富的富勒烯，Sc3N@ih-C80。1三金属氮化物内面体富勒烯(TNT)家族的发现包括非IPR的Sc3N@D3-C68，2 IPR的Sc3N@D3h-C78 3和Sc3N@D5h-C80异构体，4，5都含有相同的包裹在内部的氮化三钒簇。在一次电弧实验中可以方便地获得四种不同的有趣的化合物，但它们的有效分离带来了许多挑战。已经报道了几种分离内面体富勒烯的方法，但没有一种方法能有效地纯化Sc3N@D5h-C80。利用Sc3N@C2n(n=34，39，40)家族成员氧化/还原电位的差异，我们最近报道了一种选择性化学氧化方法，该方法可以分离出纯的Sc3N@ih-C80和Sc3N@C78，留下Sc3N@D5h-C80和Sc3N@C68的混合物。15个
In 1999 Stevenson et al. reported the third most abundant fullerene that can be prepared in an arc reactor, Sc3N@Ih-C80. 1 The discovery of the trimetallic nitride endohedral fullerene (TNT) family includes the non-IPR Sc3N@D3-C68, 2 the IPR Sc3N@D3h-C78 3 and the Sc3N@D5h-C80 isomer, 4,5 all containing the same encapsulated triscandium nitride cluster inside. It is convenient that four different and interesting compounds are obtained in a single arcing experiment but their efficient separation presents many challenges. Several methods to isolate endohedral fullerenes have been reported, but none of them result in the efficient purification of Sc3N@D5h-C80. Taking advantage of the differences in the oxidation/reduction potentials of the members of the Sc3N@C2n (n = 34, 39, 40) family, we recently reported a selective chemical oxidation method that allows the isolation of pure Sc3N@Ih-C80 and Sc3N@C78, leaving a mixture of Sc3N@D5h-C80 and Sc3N@C68. 15